Hello friends,
today I am going to explain logout in WhatsApp. If you open your WhatsApp you will not see
logout option anywhere that means you cannot logout, explicitly, from WhatsApp.
Actually
WhatsApp authenticate user by sending OTP to their mobile number. When user
enters correct OTP it is authenticated. But the OTP is valid for one time use
only. It’s not like a password.
When a user
is authenticated, an instance is created in their mobile memory. In programming
terminology it is stored in shared preferences. Now, whenever user opens
WhatsApp application, it checks that instance. If it has been created that
means user/mobile phone has been authenticated and is allowed to the WhatsApp.
This instance
is not associated with the mobile number instead it is associated with mobile phone.
E-g if someone change SIM card in mobile phone and connect to Wi-Fi WhatsApp will
work normally as the mobile phone have the instance. Now if user destroys this
instance and open WhatsApp. It will be asked for authentication again. So destroying
the instance is one type of log out. So, how to destroy this instance?
Go to mobile
setting -> manage apps. Then click on WhatsApp as shown in the following snap.
In the
bottom click “Clear data”. It will clear all data including that instance. So now,
when you open WhatsApp it will ask for authentication as now the mobile phone
does not have the instance.
